Function extract_require_once_paths

src/composer.rs:443–489

Extract file paths from `require_once` statements in PHP source content. Handles both the statement form and the function-like form: ```text require_once 'Trustly/exceptions.php'; require_once('Trustly/Data/data.php'); ``` Only bare string literals are supported — concatenations, variables, and other dynamic expressions are silently skipped. Returns the raw path strings exactly as written in th

(content: &str)

/// `"Trustly/exceptions.php"`).  The caller is responsible for resolving
/// them relative to the file's directory.
pub fn extract_require_once_paths(content: &str) -> Vec<String> {
    let mut paths = Vec::new();

    for line in content.lines() {
        let trimmed = line.trim();

        // Quick reject: line must start with `require_once`.
        // (We don't support `require_once` buried in complex expressions.)
        if !trimmed.starts_with("require_once") {
            continue;
        }

        let rest = trimmed["require_once".len()..].trim_start();

        // Strip optional parentheses: `require_once('...')` → `'...'`
        // Also handles `require_once '...'` without parens.
        let rest = if let Some(inner) = rest.strip_prefix('(') {
            // Find matching closing paren
            if let Some(end) = inner.rfind(')') {
                inner[..end].trim()
            } else {
                continue;
            }
        } else {
            rest
        };

        // Strip trailing semicolon
        let rest = rest.trim_end_matches(';').trim();

        // Extract string literal — single or double quoted
        let path = if (rest.starts_with('\'') && rest.ends_with('\''))
            || (rest.starts_with('"') && rest.ends_with('"'))
        {
            &rest[1..rest.len() - 1]
        } else {
            // Not a simple string literal — skip
            continue;
        };

        if !path.is_empty() {
            paths.push(path.to_string());
        }
    }

    paths
}

/// Parse `<vendor>/composer/autoload_namespaces.php` (PSR-0 map) and
/// scan the listed directories for PHP classes.